Perform the addition or subtraction.(5x7 - 4x4 + 7x) + (3x7 - 3x4 - 3x)
A. 8x7 - 7x4 + 4x
B. 5x12
C. 10x7 + 2x4 - 7x
D. 8x - 7x7 + 4x4
Answer: A
Mathematics
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